UA 6310 then B6 2180 at Houston
Louisville → Houston → Fort Lauderdale
Timetable, Houston time
17:19UA 6310 from Louisville at the gate
16:55B6 2180 to Fort Lauderdale leaves the gate
23 h 36 apart on the timetable, overnight
B6 2180 leaves 23 h 36 after UA 6310 arrives on the timetable: more than half a day, so not a connection we count.